/// <summary>
/// 使选中方块无效并重绘（移动选中的方块）
/// </summary>
/// <param name="dostatic"></param>
/// <param name="rect"></param>
public void DoInvalidate(bool dostatic, RectangleF rect)
{
if (dostatic)
{
m_staticDirty = true;
}
Invalidate(ScreenUtils.ConvertRect(rect));
}
} /// <summary>
/// 在画布按照IDrawObject重画
/// </summary>
/// <param name="obj"></param>
void RepaintObject(IDrawObject obj)
{
if (obj == null)
{
return;
}
CanvasWrapper dc = new CanvasWrapper(this, Graphics.FromHwnd(Handle), ClientRectangle);
RectangleF invalidaterect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(dc, obj.GetBoundingRect(dc)));
obj.Draw(dc, invalidaterect);
dc.Graphics.Dispose();
dc.Dispose();
}
protected void DrawPoint(ICanvas canvas, Pen pen, Brush fillBrush)
{
Rectangle screenrect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(canvas, m_boundingRect));
canvas.Graphics.DrawRectangle(pen, screenrect);
screenrect.X++;
screenrect.Y++;
screenrect.Width--;
screenrect.Height--;
if (fillBrush != null)
{
canvas.Graphics.FillRectangle(fillBrush, screenrect);
}
}
/// <summary>
/// 鼠标移动事件
/// </summary>
/// <param name="e"></param>
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (m_selection != null)
{
Graphics dc = Graphics.FromHwnd(Handle);
m_selection.SetMousePoint(dc, new PointF(e.X, e.Y));
dc.Dispose();
return;
}
if (m_commandType == eCommandType.pan && e.Button == MouseButtons.Left) //如果选择pan（移动画布），切按住鼠标左键
{
m_dragOffset.X = -(m_mousedownPoint.X - e.X);
m_dragOffset.Y = -(m_mousedownPoint.Y - e.Y);
m_lastCenterPoint = CenterPointUnit();
DoInvalidate(true);
}
UnitPoint mousepoint;
UnitPoint unitpoint = ToUnit(new PointF(e.X, e.Y));
if (m_commandType == eCommandType.draw || m_commandType == eCommandType.move || m_nodeMoveHelper.IsEmpty == false) //如果使绘制或者移动或节点移动或节点移动为空
{
Rectangle invalidaterect = Rectangle.Empty;
ISnapPoint newsnap = null;
mousepoint = GetMousePoint();
if (RunningSnapsEnabled)
{
newsnap = m_model.SnapPoint(m_canvaswrapper, mousepoint, m_runningSnapTypes, null);
}
if (newsnap == null)
{
newsnap = m_model.GridLayer.SnapPoint(m_canvaswrapper, mousepoint, null);
}
if ((m_snappoint != null) && ((newsnap == null) || (newsnap.SnapPoint != m_snappoint.SnapPoint) || m_snappoint.GetType() != newsnap.GetType())) //绘图时点击左键生成节点
{
Console.WriteLine("canvas 688");
invalidaterect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(m_canvaswrapper, m_snappoint.BoundingRect));
invalidaterect.Inflate(2, 2);
RepaintStatic(invalidaterect); // remove old snappoint
m_snappoint = newsnap;
}
if (m_commandType == eCommandType.move)//使用移动工具时，重画图像
{
Invalidate(invalidaterect);
}
if (m_snappoint == null)
{
m_snappoint = newsnap;
}
}
m_owner.SetPositionInfo(unitpoint); //给出绘制信息
m_owner.SetSnapInfo(m_snappoint); //给出绘制信息
//UnitPoint mousepoint;
if (m_snappoint != null)
{
mousepoint = m_snappoint.SnapPoint;
}
else
{
mousepoint = GetMousePoint();
}
if (m_newObject != null) //如果不为空则重画*
{
//MessageBox.Show(m_newObject.ToString());
//Console.WriteLine(m_newObject.ToString());
Rectangle invalidaterect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(m_canvaswrapper, m_newObject.GetBoundingRect(m_canvaswrapper)));
invalidaterect.Inflate(2, 2);
RepaintStatic(invalidaterect);
m_newObject.OnMouseMove(m_canvaswrapper, mousepoint);
RepaintObject(m_newObject);
}
if (m_snappoint != null) //如果不为空则重画
{
RepaintSnappoint(m_snappoint);
}
if (m_moveHelper.HandleMouseMoveForMove(mousepoint)) //重绘
{
Refresh(); //Invalidate();
}
RectangleF rNoderect = m_nodeMoveHelper.HandleMouseMoveForNode(mousepoint); //坐标获取
if (rNoderect != RectangleF.Empty)
{
Rectangle invalidaterect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(m_canvaswrapper, rNoderect)); //坐标转换
RepaintStatic(invalidaterect); //重绘
CanvasWrapper dc = new CanvasWrapper(this, Graphics.FromHwnd(Handle), ClientRectangle);
dc.Graphics.Clip = new Region(ClientRectangle);
//m_nodeMoveHelper.DrawOriginalObjects(dc, rNoderect);
m_nodeMoveHelper.DrawObjects(dc, rNoderect);
if (m_snappoint != null)
{
RepaintSnappoint(m_snappoint); //重绘
}
dc.Graphics.Dispose();
dc.Dispose();
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (m_selection != null)
{
Graphics dc = Graphics.FromHwnd(Handle);
m_selection.SetMousePoint(dc, new PointF(e.X, e.Y));
dc.Dispose();
return;
}
if (m_commandType == eCommandType.pan &&
(e.Button == MouseButtons.Left || e.Button == MouseButtons.Middle))
{
m_dragOffset.X = -(m_mousedownPoint.X - e.X);
m_dragOffset.Y = -(m_mousedownPoint.Y - e.Y);
m_lastCenterPoint = CenterPointUnit();
DoInvalidate(true);
}
UnitPoint mousepoint;
UnitPoint unitpoint = ToUnit(new PointF(e.X, e.Y));
if (m_commandType == eCommandType.draw || m_commandType == eCommandType.move || m_nodeMoveHelper.IsEmpty == false)
{
Rectangle invalidaterect = Rectangle.Empty;
ISnapPoint newsnap = null;
mousepoint = GetMousePoint();
if (RunningSnapsEnabled)
{
newsnap = m_model.SnapPoint(m_canvaswrapper, mousepoint, m_runningSnapTypes, null);
}
if (newsnap == null)
{
newsnap = m_model.GridLayer.SnapPoint(m_canvaswrapper, mousepoint, null);
}
if ((m_snappoint != null) && ((newsnap == null) || (newsnap.SnapPoint != m_snappoint.SnapPoint) || m_snappoint.GetType() != newsnap.GetType()))
{
invalidaterect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(m_canvaswrapper, m_snappoint.BoundingRect));
invalidaterect.Inflate(2, 2);
RepaintStatic(invalidaterect); // remove old snappoint
m_snappoint = newsnap;
}
if (m_commandType == eCommandType.move)
{
Invalidate(invalidaterect);
}
if (m_snappoint == null)
{
m_snappoint = newsnap;
}
}
m_owner.SetPositionInfo(unitpoint);
m_owner.SetSnapInfo(m_snappoint);
//UnitPoint mousepoint;
if (m_snappoint != null)
{
mousepoint = m_snappoint.SnapPoint;
}
else
{
mousepoint = GetMousePoint();
}
if (m_newObject != null)
{
Rectangle invalidaterect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(m_canvaswrapper, m_newObject.GetBoundingRect(m_canvaswrapper)));
invalidaterect.Inflate(2, 2);
RepaintStatic(invalidaterect);
m_newObject.OnMouseMove(m_canvaswrapper, mousepoint);
RepaintObject(m_newObject);
}
if (m_snappoint != null)
{
RepaintSnappoint(m_snappoint);
}
if (m_moveHelper.HandleMouseMoveForMove(mousepoint))
{
Refresh(); //Invalidate();
}
RectangleF rNoderect = m_nodeMoveHelper.HandleMouseMoveForNode(mousepoint);
if (rNoderect != RectangleF.Empty)
{
Rectangle invalidaterect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(m_canvaswrapper, rNoderect));
RepaintStatic(invalidaterect);
CanvasWrapper dc = new CanvasWrapper(this, Graphics.FromHwnd(Handle), ClientRectangle);
dc.Graphics.Clip = new Region(ClientRectangle);
//m_nodeMoveHelper.DrawOriginalObjects(dc, rNoderect);
m_nodeMoveHelper.DrawObjects(dc, rNoderect);
if (m_snappoint != null)
{
RepaintSnappoint(m_snappoint);
}
dc.Graphics.Dispose();
dc.Dispose();
}
}